package com.xbenben.demoroot.config;

import com.alibaba.fastjson.JSONObject;
import com.xbenben.demoroot.bean.R;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * 异常拦截
 *
 * @author xbenbenx
 * Date:2022/10/12 23:22
 **/
@RestControllerAdvice
public class ResultResponseHandler implements ResponseBodyAdvice<Object> {

    @Override
    public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object o, MethodParameter methodParameter, MediaType mediaType, Class<? extends HttpMessageConverter<?>> aClass, ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {
        if (o instanceof ErrorHandler) {
            ErrorHandler errorHandler = (ErrorHandler) o;
            return R.error().code(errorHandler.getStatus()).message(errorHandler.getMessage());
        } else if (o instanceof String) {
            return JSONObject.toJSONString(R.ok(o));
        }
        return R.ok(o);
    }
}
